1986-07-09
1989-01-24
Miller, Stanley D.
350332, 350276R, 350278, G02F 113
Patent
active
047997699
ABSTRACT:
A liquid crystal antidazzle mirror for turning OFF a power of a liquid crystal drive control circuit by a power switch provided between the liquid crystal drive control circuit and a power source comprising a capacitor of a predetermined capacity disposed between the power switch and the liquid crystal drive control circuit and connected in parallel between power lines to supply power from the capacitor to at least a mode memory circuit in the liquid crystal drive control circuit for a predetermined time determined by the discharging characteristic of the capacitor when the power switch is opened. Thus, the mirror can reset the set mode of the antidazzle mirror to the used mode immediately before a power switch is opened when the power switch is closed within a predetermined time after the power switch is opened.
REFERENCES:
patent: 4168442 (1979-09-01), Satou et al.
patent: 4530027 (1985-07-01), Berger
patent: 4669827 (1987-06-01), Fukada et al.
patent: 4671615 (1987-06-01), Fukada et al.
Demura Hiroshi
Hayashi Kazumi
Kawahashi Akira
Kokubu Sadao
Miller Stanley D.
Phan Trong Q.
Toyota Jidosha & Kabushiki Kaisha
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